KR100940241B1 - Apparatus for holding electric power supply at accessories of a vehicle - Google Patents

Abstract

PURPOSE: An apparatus for keeping electric power supply in vehicle accessories is provided to continually operate the vehicle accessories by supplying electric charge charged in a condenser to the vehicle accessories when ACC wire and battery are provisionally disconnected during the rotation of a starting motor. CONSTITUTION: An apparatus for keeping electric power supply in vehicle accessories comprises a condenser(130), a switching part(110), a switch drive part(140), and a resistor(120). The condenser is charged by the battery of the vehicle. The switching part connects or disconnects the condenser and ACC wire of the vehicle. The switch drive part controls the switching part in order for the vehicle accessories to receive the power from the condenser during starting an engine. The resistor interlinks the condenser and the ACC wire is separately from the switching part.

Description

Apparatus for holding electric power supply at accessories of a vehicle}

The present invention relates to a device for maintaining a power supply to a vehicle accessory, in particular to ensure that the power supply to the vehicle accessories that are connected to the ACC wire even if the connection between the battery and the ACC wire is disconnected during start-up It relates to a power supply holding device.

As is well known, when the driver plugs the car key into the key box and turns it to start the car, it operates in three stages.

First, when the car key is located in the first stage (ACC), it is possible to supply a battery to a vehicle accessory, for example, a car audio and a cigar jack. And the battery can be supplied to the ECU. Finally, if the driver places the car key in the third stage (START), the battery is supplied to the starter of the engine and the car is started. Then, the car key is returned to the second stage, but the electrical equipment provided in the car is driven by the power generated by the generator (generator). Of course, when the amount of power generated by the generator is small, it is possible to balance the voltage input to the electrical equipment by replenishing the shortage in the battery.

Here, in general, the vehicle accessories are rebooted because the connection between the battery and the ACC wire is temporarily cut off during the starting of the vehicle.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a power supply holding device that enables a power supply to be maintained to a vehicle accessory connected to an ACC wire even when a vehicle is starting.

An apparatus for maintaining a power supply to a vehicle accessory of the present invention to achieve the above object is a capacitor charged by the battery of the vehicle; A switching unit for turning on / off a connection between the capacitor and the ACC wire of the vehicle; And when the vehicle accessory connected to the ACC wire is disconnected between the battery and the ACC wire while starting, and the vehicle accessory is not supplied with power from the battery, the switching to enable the vehicle accessory to receive power from the capacitor. It comprises a switch drive for controlling the unit.

Here, the capacitance of the capacitor is sufficient to supply power to the vehicle accessory, for example, only about 1 second during the start of the car. In addition, depending on the capacitance of the capacitor, it is also possible to supply power in minutes. However, the power supply time may vary depending on the amount of power consumed by the vehicle accessories.

According to one embodiment of the present invention, the switch driving unit, when the capacitor is charged by the battery and the voltage of the capacitor is above a predetermined upper limit is connected to the capacitor and the ACC wire, the capacitor is discharged to the And a relay coil controlling the switching unit so that the connection between the capacitor and the ACC wire is disconnected when the voltage of the capacitor becomes lower than or equal to a predetermined lower limit.

In addition, the power supply holding device according to an embodiment of the present invention may further include a resistor element for connecting the capacitor and the ACC wire separately from the switching unit. That is, the capacitor receives the power supply from the battery through the resistor element to charge. On the other hand, the discharge from the capacitor to the vehicle accessory is made through the switching unit.

In addition, the power supply holding apparatus according to an embodiment of the present invention may further comprise a rectifying element for preventing damage to the relay coil due to back electromotive force.

According to another embodiment of the present invention, the condenser is connected to the B + wire of the vehicle, characterized in that the charge by the battery. That is, the capacitor receives power from the battery regardless of the position of the key in the key box, whether or not the car key is plugged into the key box.

In addition, according to another embodiment of the present invention, the switch driver is connected to the IG1 wire of the vehicle. Here, as is well known, the IG1 wire is connected to the battery even during starting of the car.

In addition, according to another embodiment of the present invention, the switch driver is connected to the condenser and the ACC wire when the electrical energy is supplied from the battery to the switch driver through the IG1 wire, and in the battery through the IG1 wire And a relay coil for controlling the switching unit so that the connection between the capacitor and the ACC wire is disconnected when electrical energy is not supplied to the switch driving unit.

On the other hand, the power supply holding device according to another embodiment of the present invention includes a capacitor charged by the battery of the vehicle; A first switching unit for turning on / off a connection between the second switching unit and the capacitor; The second switching unit turning on / off a connection between the first switching unit and the ACC wire of the vehicle; A key recognition switch connecting the second switch driver to the battery when the car key is plugged into the key box, and disconnecting the second switch driver from the battery when the car key is not plugged into the key box; When the power supply is supplied from the battery through the key recognition switch, the second switching unit is driven to connect the first switching unit and the ACC wire, and when the power supply from the battery is not received through the key recognition switch, The second switch driver driving the second switching unit such that the first switching unit and the ACC wire are not connected to each other; And when the vehicle accessory connected to the ACC wire does not receive power from the battery when the connection between the battery and the ACC wire is disconnected while starting, the vehicle accessory may receive power supply from the capacitor. It comprises a first switch driver for controlling the first switching unit.

As described above, the power supply maintenance device of the present invention allows the vehicle accessories to be rebooted even during start-up by supplying the electric charges charged to the condenser even when the connection between the battery and the ACC wire is temporarily disconnected while the starter motor rotates. It provides the effect that can keep the motion.

Hereinafter, an apparatus for maintaining a power supply to a vehicle accessory according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail.

1 is a block diagram of a power supply holding apparatus according to an embodiment of the present invention.

As shown in FIG. 1, a power supply maintaining apparatus according to an exemplary embodiment of the present invention may include a switching unit 110, a resistance element 120, a capacitor 130, a switch driver 140, a rectifying element 150, and the like. Stabilization circuit unit 160 may be included.

The switching unit 110 turns on / off the connection between the capacitor 130 and the ACC wire.

The switch driver 140 is connected in parallel with the condenser 130 and controls the on / off operation of the switching unit 110.

The switching driver 140 and the switching unit 110 may be implemented as a relay including an electromagnet (coil).

The rectifier 150 is connected in parallel with the switching driver 140 to prevent damage to the relay coil due to counter electromotive force.

When the capacitor 130 is connected to the battery and the ACC wire, the electrical energy is supplied from the battery through the resistance element 120 and charged. In addition, when the connection between the battery and the ACC wire is cut off during startup (in this case, the switching unit 110 is turned on by the switch driver 140), the charged charge is transferred to the switching unit 110. Discharge through vehicle accessories.

The capacitor 130 may be an electric double-layer capacitor.

The resistance element 120 connects the ACC wire and the condenser 130 separately from the switching unit 110. That is, the resistance element 120 is in parallel with the switching unit 110.

The resistance element 120 prevents an excessive voltage from being applied to the capacitor 130 instantaneously. When the capacitor 130 is to be directly charged when the battery is directly connected to the capacitor 130, an overcurrent flows instantaneously. That is, the resistance element 120 is to gradually charge the capacitor 130, to prevent damage to the capacitor 130, the relay or other accessories (eg, fuses) due to overcurrent.

The stabilization circuit 160 is connected to the condenser 130 and the switch driver 140 in parallel, respectively, to remove electric energy remaining in the capacitor 130 even after the user removes the car key from the key box. to be.

FIG. 2 is a graph illustrating a capacitor voltage changing according to a vehicle state, and a charging / discharging mechanism of a power supply holding device according to an exemplary embodiment of the present invention will be described below in detail with reference to FIG. 2.

When the user plugs the key into the keybox and places it in the 1st stage (ACC) or 2nd stage (ON), the battery and ACC wires are connected. Accordingly, the capacitor 130 is charged through the resistor element 120. At this time, when the charging voltage of the capacitor reaches a predetermined voltage, for example, 8V (t1 time point; see FIG. 2), the switch driver 140 switches the switching unit 110 to an on state by moving the contact point of the switch from A to B. . Accordingly, the charging is completed in the capacitor 130, and a discharge path through which the charge accumulated in the capacitor 130 can be supplied to the vehicle accessory through the ACC wire is formed.

Next, when the user starts up (at time t2; see FIG. 2), the battery and the ACC wire are temporarily disconnected. At this time, power is supplied from the condenser 130 to the vehicle accessory through the discharge path previously formed.

Next, when the user turns off the start and the key is located in the LOCK or pulled out of the key box (t3 time point; see FIG. 2), the capacitor 130 is discharged with the help of the stabilization circuit unit 160. At this time, when the charging voltage of the capacitor reaches a predetermined voltage, for example, 2.5V (t4 time point; see FIG. 2), the switch driver 140 moves the switch contact point from B to A to turn off the switching unit 110. do.

Meanwhile, the vehicle accessories may operate with the electric energy remaining in the condenser 130 until the switching unit 110 is turned off even when the user turns off the ignition and positions the key in the lock or removes the key from the key box. .

In addition, since the power supply holding device according to the embodiment of the present invention described with reference to FIG. 1 only needs to be connected to an ACC wire, it is easier to install than other embodiments to be described later.

3 is a block diagram of a power supply holding apparatus according to another embodiment of the present invention.

As shown in FIG. 3, the power supply maintaining apparatus according to another exemplary embodiment of the present invention may include a first switching unit 240, a resistance element 270, a capacitor 250, a first switch driving unit 230, and a rectifying element. 260, the second switch 211 and 213, and the second switch driver 220 may be included.

The first switching unit 240 turns on / off the connection between the capacitor 250 and the ACC wire.

The first switch driver 230 controls on / off operation of the first switch 240 and is connected to the IG1 wire of the vehicle. Here, as is well known, the IG1 wire is connected to the battery when the position of the autonomous key is two or more (ON), and is connected to the battery even while the starter motor is rotating (that is, starting up).

The first switch driver 230 and the first switch 240 may be implemented as a relay including a coil.

The capacitor 250 is directly connected to the battery through the B + wire of the vehicle. Thus, the capacitor 250 is in the charged state regardless of the position of the key in the key box, whether or not the automatic value key is plugged into the key box.

The capacitor 250 is charged when the connection between the battery and the ACC wire is disconnected while the start-up is started (the first switching unit 240 is turned on by the first switch driver 230). Discharges to the vehicle accessory through the first switching unit 240.

The capacitor 250 may be an electric double-layer capacitor.

The resistance element 270 prevents an excessive voltage from being applied to the capacitor 250 instantaneously, and is located between the capacitor 250 and the B + wire.

The rectifying element 150 is for preventing current from flowing backward, that is, flowing from the capacitor 250 to the battery, and is located between the capacitor 250 and the B + wire.

The second switching units 211 and 213 are formed on the ACC wire and turn on / off the connection between the ACC terminal in the key box and the vehicle accessory.

The second switch driver 220 controls the on / off operation of the second switches 211 and 213 and is connected to the ACC wire.

The second switch driver 220 and the second switches 211 and 213 may be implemented as a relay including a coil.

As described above, the charging / discharging mechanism of the power supply holding apparatus according to another embodiment of the present invention will be described in detail below.

When the user plugs the key into the keybox and places it in the 1st stage (ACC) or 2nd stage (ON), the battery and ACC cable are connected. If so, the second switch driver 220 operates as it receives power from the battery. That is, the second switch driver 220 moves the contact point of the switch from A to B to turn on the second switches 211 and 213. Accordingly, vehicle accessories connected to the ACC cable can be powered from the battery.

Next, when the user starts up, the battery and ACC wires are temporarily cut off. If so, the second switch driver 220 stops supplying power from the battery. Accordingly, the contact point of the switch moves from B to A so that the second switching units 211 and 213 are turned off.

In addition, when the user places or starts the car key in the second stage (ON), the first switch driver 230 operates as it receives power from the battery. That is, the first switch 240 is turned on by moving the contact point of the switch from A to B. As a result, a discharge path through which the charge accumulated in the capacitor 250 can be supplied to the vehicle accessory through the ACC wire is formed. That is, when the user starts up, the vehicle accessory is powered through this discharge path.

Next, when the user turns off the ignition and places the key in LOCK or removes it from the keybox, all switches are placed in contact A.

4 is a block diagram of a power supply holding apparatus according to still another embodiment of the present invention.

As shown in FIG. 4, the power supply maintaining apparatus according to another embodiment of the present invention may include a first switching unit 310, a resistance element 320, a capacitor 330, a first switch driving unit 340, and a first switching unit 340. The first rectifying device 350, the stabilization circuit unit 360, the second switch driver 370, the second switching unit 380, the third switching unit 390, and the second rectifying device 400 may be formed. .

The first switching unit 310 turns on / off a connection between the second switching unit 380 and the capacitor 330.

The second switching unit 380 is connected in series with the first switching unit 310, and turns on / off the connection between the first switching unit 310 and the ACC wire.

The first switch driver 340 is connected to the capacitor 330 in parallel and controls the on / off operation of the first switch 310.

The second switch driver 370 controls the on / off operation of the second switch 380 and is connected to the third switch 390.

The first switching driver 340 and the first switching unit 310 may be implemented as a relay including an electromagnet (coil). In addition, the second switch driver 370 and the second switch 380 may also be implemented as a relay.

The first rectifying element 350 and the second rectifying element 400 are connected to the first switching driver 340 and the second switch driver 370 in parallel, respectively, to prevent damage to the relay coil due to counter electromotive force. It is to.

The third switching unit 390 is a key recognition switch and turns on / off a connection between the second switch driver 370 and the battery, that is, the B + wire.

The operation of the third switching unit 390 is performed by the vehicle key. That is, when the car key is plugged into the key box, it is in an on state, whereas when the car key is not plugged into the key box, it is in an off state.

When the capacitor 330 is connected to the battery and the ACC wire, the electric energy is supplied from the battery through the second switching unit 380 and the resistor 120 to be charged. In addition, when the connection between the battery and the ACC wire is disconnected during start-up (where the switching units 310 and 380 are turned on by the switch driving units 340 and 370), the charged charge is switched. Discharges to the vehicle accessory via the parts 310, 380.

The capacitor 330 may be an electric double-layer capacitor.

The resistance element 320 prevents an excessive voltage from being applied to the capacitor 330 instantaneously, and connects the second switching unit 380 and the capacitor 330 separately from the first switching unit 310. That is, the resistance element 320 is in parallel with the first switching unit 310.

The stabilization circuit 360 is connected in parallel with the condenser 330 and the first switch driver 340, respectively, to remove the electric energy remaining in the condenser 330 even after the user removes the car key from the key box. For sake.

As described above, the charging / discharging mechanism of the power supply maintaining apparatus according to another embodiment of the present invention will be described in detail below.

When the user inserts the key into the keybox, the key recognition switch 390 switches from off to on. Then, the second switch driver 370 receives power from the battery and operates. That is, the second switch driver 370 moves the contact point of the switch from A to B to turn the second switch 380 on.

Next, when the user places the key in the 1st stage (ACC) or 2nd stage (ON), the battery and the ACC wire are connected. Accordingly, the capacitor 330 is charged through the second switching unit 380 and the resistance element 320. At this time, when the charging voltage of the capacitor 330 becomes a constant voltage, for example, 8V, the first switch driver 340 moves the contact point of the switch from A to B to turn on the first switching unit 310 to an on state. Accordingly, the charging is completed in the capacitor 330, and a discharge path through which the charge accumulated in the capacitor 330 can be supplied to the vehicle accessory through the ACC wire is formed.

Next, when the user starts up, the battery and ACC wires are temporarily cut off. At this time, power is supplied from the condenser 330 to the vehicle accessory through the discharge path previously formed.

Next, when the user turns off the start and the key is located in the LOCK or pulled out of the key box, the capacitor 330 is discharged with the help of the stabilization circuit unit 360. At this time, when the charging voltage of the capacitor 330 becomes a predetermined voltage, for example, 2.5V, the first switch driver 340 moves the contact point of the switch from B to A to switch off the first switching unit 310 to an off state. .

On the other hand, the vehicle accessories may operate with the electric energy remaining in the condenser 330 until the first switching unit 310 is turned off if the key is located in the lock even if the user turns off the ignition. However, when the user pulls the key out of the keybox, the key recognition switch 390 switches from on to off and thus the second switching unit 380 also switches from on to off, so that the vehicle accessories stop immediately. do.

The apparatus for maintaining the power supply to the vehicle accessory of the present invention is not limited to the above-described embodiment can be carried out in various modifications within the scope of the technical idea of the present invention. In the above description, the starter has been described with a car key, but, for example, a vehicle that is started with a start button is also disconnected between the battery and the ACC wire during start, and thus, the smart button vehicle can be applied to the apparatus of the present invention. .

1 is a block diagram of a power supply holding apparatus according to an embodiment of the present invention.

2 is a graph showing a condenser voltage changing according to a vehicle state.

3 is a block diagram of a power supply holding apparatus according to another embodiment of the present invention.

4 is a block diagram of a power supply holding apparatus according to still another embodiment of the present invention.

*** Explanation of symbols for the main part of FIG. 1 ***

110: switching unit 120: resistance element

130: condenser 140: switch drive unit

150: rectifier element 160: stabilization circuit portion

*** Explanation of symbols for the main parts of FIG. 3 ***

211 and 213: second switching unit 220: second switch driving unit

230: first switch driving unit 240: first switching unit

250: capacitor 260: rectifier element

270: resistive element

*** Explanation of symbols for the main part of FIG. 4 ***

310: first switching unit 320: resistance element

330: capacitor 340: first switch drive unit

350: first rectifying element 360: stabilization circuit portion

370: second switch driver 380: second switch

390: third switching unit (key recognition switch) 400: second rectifying element

Claims (7)

A condenser 130 charged by a battery of the vehicle; A switching unit 110 for turning on / off a connection between the capacitor and the ACC wire of the vehicle; If the connection between the battery and the ACC cable is disconnected during startup, and the vehicle accessory connected to the ACC cable does not receive power from the battery, the switching unit may receive power from the capacitor. A switch driver 140 for controlling; And Apart from the switching unit, a power supply holding device comprising a resistor element (120) connecting the capacitor and the ACC wire. The method of claim 1, wherein the switch drive unit, When the capacitor is charged by the battery and the voltage of the capacitor reaches a predetermined upper limit or more, the capacitor and the ACC wire are connected. When the capacitor is discharged and the voltage of the capacitor falls below a predetermined lower limit, the capacitor and the And a relay coil for controlling the switching unit to disconnect the ACC wires. delete The method of claim 2, And a rectifying element for preventing damage to the relay coil due to counter electromotive force. delete delete A capacitor 330 charged by a battery of the vehicle; A first switching unit 310 for turning on / off a connection between the second switching unit and the capacitor; The second switching unit 380 for turning on / off a connection between the first switching unit and the ACC wire of the vehicle; The key recognition switch 390 connects the second switch driver and the battery when the car key is inserted into the key box, and disconnects the connection between the second switch driver and the battery when the car key is not inserted into the key box. ;  When the power supply is supplied from the battery through the key recognition switch, the second switching unit is driven to connect the first switching unit and the ACC wire, and when the power supply from the battery is not received through the key recognition switch, The second switch driver 370 driving the second switching unit such that the first switching unit and the ACC wire are not connected to each other; And When the vehicle accessory connected to the ACC wire is disconnected from the battery while the ignition is disconnected, and the vehicle accessory connected to the ACC wire does not receive power from the battery, the first vehicle accessory may receive power from the capacitor. Power supply holding device comprising a first switch driver (340) for controlling the switching unit.

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